A motor stator and rotor assembling device

Abstract

This utility model relates to the field of motor technology and discloses a motor stator and rotor assembly equipment. The equipment comprises a stator assembly positioning mechanism, a pre-tightening pressing mechanism, a lifting mechanism, a servo transmission mechanism, a fiber optic sensor, and a simple electrical control device, which work together as power and auxiliary mechanisms to achieve assembly. This ensures the safety and efficiency of the assembly process, avoiding damage and scratches caused by excessive weight of the rotor components during manual assembly. After the equipment is debugged, it ensures a high degree of concentricity, providing protection for the installation of deep groove ball bearings and preventing secondary repairs after damage. It also ensures that operators are not injured by machinery during production.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor stator and rotor assembly device. Background Technology

[0002] In traditional motor structures, the rotor assembly is typically supported in a bearing housing on the casing or end cover. During rotor assembly installation, it usually passes through the stator and is installed in the stator cavity. The distance between the rotor and stator is called the air gap. To improve energy efficiency, the air gap is often designed to be extremely small, and the concentricity of the stator and rotor assemblies must be highly consistent during assembly.

[0003] Permanent magnet rotor components have strong magnetism. In actual production, the rotor components are affected by the magnetic force during installation, making it difficult to install them concentrically. It is also difficult for installers to correct them manually, often resulting in friction with the inner wall of the stator cavity. In minor cases, this affects the appearance of the product; in severe cases, it can damage the rotor components or even the windings, producing defective products and affecting delivery time.

[0004] There is an urgent market need for a motor stator and rotor assembly equipment that can automate the assembly process of different motor models, precisely assemble the stator and rotor, avoid motor damage, and reduce the workload of personnel. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides a device for assembling a motor stator and rotor.

[0006] An assembly device for assembling a motor stator and rotor includes a stator assembly positioning mechanism, a pre-tightening pressing mechanism, a lifting mechanism, and a servo transmission mechanism;

[0007] The servo drive mechanism provides power to the pre-tightening pressing mechanism and provides a mounting base for the lifting mechanism and the stator assembly positioning mechanism;

[0008] The pre-tightening pressing mechanism is used to limit the movement of the rotor components and to press them into place.

[0009] The stator assembly positioning mechanism is used to position the stator components and adjust the stator components to be concentric with the rotor components;

[0010] The lifting mechanism is used to assist in fixing the rotor components and pressing them into place.

[0011] Furthermore, the servo transmission mechanism includes a mounting bracket set on the mounting base plate, which serves as the main structural component of the servo transmission mechanism. The servo motor is mounted on its rear side, and linear guide rails are fixed on the left and right sides of the mounting bracket to provide overall guidance. The slider is set on the linear guide rail to achieve up and down sliding.

[0012] The slider includes a first slider and a second slider.

[0013] Furthermore, the servo transmission mechanism also includes a lead screw fixed on the mounting bracket; the lead screw is connected to the servo motor via a synchronous pulley and synchronous belt, and converts the rotational motion of the servo motor into up-and-down linear motion; the servo motor accurately controls the speed and direction of movement of the lead screw to achieve precise positioning;

[0014] The servo motor and the lead screw have their output shafts at the same height. Two synchronous pulleys are mounted on the servo motor and the lead screw respectively and connected by a synchronous belt to form a transmission structure in the Z-axis direction.

[0015] Furthermore, the stator assembly positioning mechanism includes a stator assembly fixing plate mounted on the mounting base plate, on which a positioning pin is provided as a positioning fixture for the stator component; after the stator component is placed, it is clamped and fixed by a 90-degree rotation clamping mechanism; the position of the stator assembly fixing plate and the relative concentricity between the stator component and the rotor component are adjusted and fixed by the X-axis adjustment knob and the Y-axis adjustment knob.

[0016] Furthermore, the lifting mechanism includes a lifting rod connected to a Y-axis adjustment structure, which is fixed to the right side of the lifting rod to adjust the left and right distances. The Y-axis adjustment structure is mounted on a second slider, which is connected to a cylinder via a connector. The cylinder is mounted on the lower side of the mounting bracket, enabling the lifting rod to move up and down under the drive of the cylinder.

[0017] Furthermore, the pre-tightening pressing mechanism is installed on the first slider on the linear guide rail. The first slider is connected to the lead screw through a connecting piece and moves up and down under the action of the servo motor transmission mechanism.

[0018] The pre-tightening pressing mechanism includes a pre-tightening pressing base plate fixed on the first slider. The pre-tightening pressing base plate is provided with an upper top plate. The upper top plate is connected to multiple evenly distributed guide buffer mechanisms, which can play a pre-pressing role after the rotor component is installed on the lifting rod, making the fixation more reliable. At the same time, it can buffer the impact load during assembly and reduce the damage to the deep groove ball bearing. The other end of the guide buffer mechanism is provided with a rotor fixing structure for fixing the rotor.

[0019] Furthermore, a pressing rod is provided on the pre-tightening pressing base plate. The pressing rod adopts a hollow structure. The hollow structure is designed so that the ends of the rotor will not be damaged when the rotor is pressed into the stator.

[0020] Furthermore, it also includes fiber optic sensors and simple electronic control devices.

[0021] The mounting bracket is equipped with multiple photoelectric switches on one side to limit the vertical movement distance of the lead screw.

[0022] The pre-tightening and pressing mechanism is equipped with an optical fiber sensor to detect whether the product is properly inserted.

[0023] The stator assembly mounting plate is equipped with an optical fiber sensor to determine whether the stator components are installed in place.

[0024] The simple electronic control device completes each step of the process according to the operation buttons and the position of each component of the equipment.

[0025] Furthermore, it also includes adjusting the dummy shaft, which is a special debugging part made in 1:1 scale to the size of the motor shaft. The pre-tightening pressing mechanism and the lifting mechanism are adjusted to be concentric by adjusting the dummy shaft.

[0026] Furthermore, the cylinder provides power to the lifting rod, and the cylinder is controlled by a central leakage solenoid valve, so that the cylinder retracts more smoothly and will not suddenly retract to the lowest point during the pressing process of the pre-tightening mechanism, thus ensuring the stable installation of the rotor components.

[0027] The above-described one or more technical solutions in the embodiments of this utility model have at least one of the following technical effects:

[0028] 1. Avoid damaging the rotor during assembly. The motor installed using this equipment will be free of defects in appearance. At the same time, avoid damaging rotor components and windings, protect the carbon fiber on the rotor from bumps and scratches, and improve the yield rate.

[0029] 2. Protect the bearings. During bearing installation, avoid subjecting the bearings to excessive axial impact force; protect the bearing clearance and reduce rigid damage to the bearing balls; reduce abnormal noise, radial runout and other adverse phenomena in the motor during actual use.

[0030] 3. To avoid mechanical injuries during assembly, this product replaces manual labor for rotor component installation, effectively preventing mechanical harm to personnel, improving production cycle time, and resulting in better product consistency after this process.

[0031] 4. Through a well-designed positioning structure, combined with cylinder and servo motor transmission, a highly efficient and stable assembly effect is achieved. With the addition of a small number of fiber optic sensors and simple electrical control devices, semi-automatic production can be carried out. Only one concentricity adjustment is needed to ensure stable assembly.

[0032] 5. The modular design allows for the replacement of tooling for different motor models, enabling a single machine to accommodate the assembly of multiple motor models within a certain range.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a side view of the pre-adjustment state of the motor stator and rotor assembly equipment of this utility model;

[0036] Figure 2 yes Figure 1 Side sectional view;

[0037] Figure 3 This is a perspective view of the motor stator and rotor assembly equipment of this utility model;

[0038] Figure 4 yes Figure 3 A cross-sectional view;

[0039] Figure 5 This is a front view of the assembled motor stator and rotor assembly equipment of this utility model in the assembled state;

[0040] Figure 6 This is a perspective view of the stator assembly positioning mechanism of the motor stator and rotor assembly equipment of this utility model;

[0041] Figure 7 This is a perspective view of the lifting mechanism of the motor stator and rotor assembly equipment of this utility model;

[0042] Figure 8 This is a perspective view of the pre-tightening pressing mechanism of the motor stator and rotor assembly equipment of this utility model;

[0043] Figure 9 yes Figure 8 A cross-sectional view.

[0044] The components include: 1. Mounting base plate; 2. Stator assembly fixing plate; 3. X-axis adjustment knob; 4. Y-axis adjustment knob; 5. 90-degree rotation clamping mechanism; 6. Stator assembly; 7. Rotor assembly; 8. Adjusting dummy shaft; 9. Pre-tightening press-in base plate; 10. First slider; 11. Cylinder; 12. Servo motor; 13. Lead screw; 14. Synchronous pulley; 15. Linear guide rail; 16. Mounting bracket; 17. Second slider.

[0045] 18. Lifting rod; 19. Synchronous belt; 20. Y-axis adjustment structure; 21. Pressing rod; 22. Rotor fixing structure; 23. Guide buffer structure; 24. Photoelectric switch; 25. Top plate. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. The following embodiments are used to illustrate this utility model but should not be used to limit its scope.

[0047] Figures 1 to 9 This illustrates the overall structure of the motor stator and rotor assembly device and the connection relationships of each component in this invention.

[0048] An assembly device for motor stator and rotor includes a stator assembly positioning mechanism, a pre-tightening pressing mechanism, a lifting mechanism, and a servo transmission mechanism.

[0049] The servo drive mechanism includes a mounting bracket 16 mounted on the mounting base plate 1, which serves as the main structural component of the servo drive mechanism. The servo motor 12 is mounted on its rear side, and linear guide rails 15 are fixed on the left and right sides of the mounting bracket 16 to provide overall guidance. The slider is mounted on the linear guide rail 15 and can slide up and down.

[0050] The lead screw 13 is fixed on the mounting bracket 16; power is provided by the servo motor 12. The lead screw 13 and the servo motor 12 are connected to the synchronous belt 19 via the synchronous pulley 14, which converts the rotational motion of the servo motor 12 into up-and-down linear motion. This allows the servo motor 12 to accurately control the speed and direction of movement of the lead screw 13, achieving precise positioning.

[0051] The servo motor 12 and the lead screw 13 have their output shafts at the same height. Two synchronous pulleys 14 are respectively mounted on the servo motor 12 and the lead screw 13 and connected by a synchronous belt 19 to form a transmission structure in the Z-axis direction.

[0052] The stator assembly positioning mechanism includes a stator assembly fixing plate 2 mounted on the mounting base plate 1, which is provided with positioning pins as positioning fixtures for the stator component 6. After the stator component 6 is placed, it is clamped and fixed by a 90-degree rotation clamping mechanism 5. The position of the stator assembly fixing plate 2 and the relative concentricity between the stator component 6 and the rotor component 7 are adjusted and fixed by the X-axis adjustment knob 3 and the Y-axis adjustment knob 4.

[0053] The pre-tightening pressing mechanism is installed on the first slider 10 on the linear guide rail 15. The first slider 10 is connected to the lead screw 13 through a connector and moves up and down under the action of the servo motor 12 transmission mechanism.

[0054] The lifting mechanism includes a lifting rod 18, which is connected to a Y-axis adjustment structure 20 fixed to the right side of the lifting rod 18 for adjusting the left and right distance. The Y-axis adjustment structure 20 is mounted on a second slider 17, which is connected to a cylinder 11 via a connector. The cylinder 11 is mounted on the lower side of the mounting bracket 16, enabling the lifting rod 18 to move up and down under the drive of the cylinder 11.

[0055] The pre-tightening pressing mechanism includes a pre-tightening pressing base plate 9 fixed on the first slider 10. An upper top plate 25 is provided on the pre-tightening pressing base plate 9, and four evenly distributed guide buffer mechanisms are connected to the upper top plate 25. These mechanisms provide pre-tightening after the rotor component 7 is installed on the lifting rod 18, making the fixation more secure and buffering the impact load during assembly, reducing damage to the deep groove ball bearing. A rotor fixing structure 22 is provided at the other end of the guide buffer mechanism for fixing the rotor.

[0056] A pressing rod 21 is also provided on the pre-tightening pressing base plate 9. The pressing rod 21 adopts a hollow structure. The hollow structure is designed so that the end of the rotor will not be damaged when the rotor is pressed into the stator.

[0057] During use, the rotor component 7 is mounted on the lifting rod 18 protruding from the stator component and is pre-tightened and fixed under the action of the guide buffer structure 23, ensuring that the stator component 6 and the rotor component 7 are concentric. During equipment operation, the rotor component 7 is pressed downward into the stator component 6 by the pressing rod 21 to complete the assembly.

[0058] The system includes fiber optic sensors and a simple electrical control device. Multiple photoelectric switches 24 are installed on one side of the mounting bracket 16 to limit the vertical movement of the lead screw 13. A fiber optic sensor is installed on the pre-tightening pressing mechanism to detect whether the product is properly installed. A fiber optic sensor is also installed on the stator assembly fixing plate 2 to determine whether the stator component 6 is properly installed. The simple electrical control device completes each step of the process based on the operation buttons and the positions of the various components.

[0059] The adjusting dummy shaft 8 is a specially designed adjustment part, made to a 1:1 scale replica of the motor shaft. This equipment requires pre-adjustment of the pre-tightening pressing mechanism and the lifting mechanism to be concentric using the dummy shaft. After adjustment, the concentricity is confirmed using a dial indicator; only after confirmation can the equipment be used.

[0060] When using this equipment, it should first be in its initial state, with the pre-tightening mechanism at its highest point and the lifting mechanism at its lowest point. At this time, the fiber optic sensor and the simple electrical control device will perform a self-check of the equipment status. Once the equipment meets the operating conditions, proceed with product installation.

[0061] When not using this utility model equipment, the product consists of two parts: a stator component 6 and a rotor component 7. The stator component 6 is fixed in the corresponding position on the equipment; after it is fixed, the fiber optic detection is installed in place, and the lifting rod 18 of the lifting mechanism rises to protrude from the stator component 6.

[0062] The product rotor component 7 is fixed on the lifting rod 18, and the upper guide buffer structure 23 presses on the upper end face of the rotor component 7. At this time, the rotor component 7 is fixed between the lifting mechanism and the pre-tightening pressing mechanism, and is concentric with the mounting hole of the stator component 6.

[0063] The next step requires the operator to start the equipment with both hands. If any foreign object enters the equipment after it is started, the equipment will stop operating under the action of the safety light curtain and fiber optic sensor. After the equipment is started, the pre-tightening pressing mechanism is driven by the servo motor 12 transmission device and guided by the lifting rod 18 and the linear guide rail 15, and runs accurately according to the preset parameters until the assembly is completed.

[0064] After the product installation is complete, restore it to its initial state. The product can be removed after restoring to the initial state. After confirming the fiber optic cable is in good working order, the device will complete a reset and self-test, thus completing one use cycle.

[0065] The pre-pressing mechanism uses a servo motor 12 for transmission, which can accurately control the stroke of the rotor component 7 when the stator component 6 and the rotor component 7 are assembled, thereby improving the installation accuracy.

[0066] The lifting rod 18 is driven by the cylinder 11. The lifting rod 18 only needs to ensure that the rotor component 7 and the stator component 6 are concentric, and does not need to ensure the spatial position of the rotor component 7 in the vertical direction. A pneumatic device with slightly lower precision can meet the requirements. This design can reduce costs.

[0067] Cylinder 11 provides power to lifting rod 18. Cylinder 11 is controlled by a central leakage solenoid valve, which makes the retraction of cylinder 11 smoother and prevents it from suddenly retracting to the lowest point during the pressing process of the pre-tightening mechanism, thus ensuring the stable installation of rotor components.

[0068] The stator component 6 is positioned by the stator assembly fixing plate 2, and the 90-degree rotating clamping mechanism 5 only performs the clamping function. The requirements can be met by low-precision pneumatic devices and a small number of structural parts, which can save design space and reduce costs.

[0069] The Y-axis adjustment structure in the lifting mechanism, the X-axis adjustment knobs 3 and Y-axis adjustment knobs 4 on both sides of the stator assembly fixing plate 2 all use fine-thread adjustment bolts instead of lead screws 13. When adjusting concentricity, it can simultaneously meet the requirements of fine adjustment and precision, making the adjustment simpler and reducing costs.

[0070] Equipped with multiple fiber optic sensors, it can detect whether materials are in the designated placement position and monitor the movement position of the lead screw 13, preventing accidental entry of hands into the equipment during operation. It can prevent product omissions, improve operational safety, and perform a self-check and reset after production is complete.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A motor stator and rotor assembly apparatus, characterized by, This includes a stator assembly positioning mechanism, a pre-tightening pressing mechanism, a lifting mechanism, and a servo drive mechanism; The servo drive mechanism provides power to the pre-tightening pressing mechanism and provides a mounting base for the lifting mechanism and the stator assembly positioning mechanism; The servo transmission mechanism includes a mounting bracket set on the mounting base plate, which serves as the main structural component of the servo transmission mechanism. A servo motor is mounted on its rear side, and linear guide rails are fixed on the left and right sides of the mounting bracket to provide overall guidance. A slider is set on the linear guide rail to achieve up and down sliding. The slider includes a first slider and a second slider; The servo transmission mechanism also includes a lead screw fixed on the mounting bracket; the lead screw is connected to the servo motor via a synchronous pulley and synchronous belt, and converts the rotational motion of the servo motor into up-and-down linear motion; the servo motor accurately controls the speed and direction of movement of the lead screw to achieve precise positioning; The pre-tightening pressing mechanism is used to limit the movement of the rotor components and to press them into place. The pre-tightening pressing mechanism is installed on the first slider on the linear guide rail. The first slider is connected to the lead screw through a connector and moves up and down under the action of the servo motor transmission mechanism. The stator assembly positioning mechanism is used to position the stator components and adjust the stator components to be concentric with the rotor components; The stator assembly positioning mechanism includes a stator assembly fixing plate mounted on the mounting base plate, on which a positioning pin is provided as a positioning fixture for the stator component; after the stator component is placed, it is clamped and fixed by a 90-degree rotation clamping mechanism; the position of the stator assembly fixing plate and the relative concentricity between the stator component and the rotor component are adjusted and fixed by the X-axis adjustment knob and the Y-axis adjustment knob. The lifting mechanism is used to assist in fixing the rotor components and pressing them into place. The lifting mechanism includes a lifting rod connected to a Y-axis adjustment structure, which is fixed to the right side of the lifting rod to adjust the left and right distance. The Y-axis adjustment structure is set on a second slider, which is connected to a cylinder through a connector. The cylinder is installed on the lower side of the mounting bracket to enable the lifting rod to move up and down under the drive of the cylinder.

2. The motor stator and rotor assembly equipment according to claim 1, characterized in that, The servo motor and the lead screw have their output shafts at the same height. Two synchronous pulleys are mounted on the servo motor and the lead screw respectively and connected by a synchronous belt to form a transmission structure in the Z-axis direction.

3. The motor stator and rotor assembly equipment according to claim 2, characterized in that, The pre-tightening pressing mechanism includes a pre-tightening pressing base plate fixed on the first slider. The pre-tightening pressing base plate is provided with an upper top plate. The upper top plate is connected to multiple evenly distributed guide buffer mechanisms, which can play a pre-pressing role after the rotor component is installed on the lifting rod, making the fixation more reliable. At the same time, it can buffer the impact load during assembly and reduce the damage to the deep groove ball bearing. The other end of the guide buffer mechanism is provided with a rotor fixing structure for fixing the rotor.

4. The motor stator and rotor assembly equipment according to claim 3, characterized in that, A pressing rod is also provided on the pre-tightening pressing plate. The pressing rod adopts a hollow structure. The hollow structure is designed so that the ends of the rotor will not be damaged when the rotor is pressed into the stator.

5. The motor stator and rotor assembly equipment according to claim 1, characterized in that, It also includes fiber optic sensors and simple electronic control devices. The mounting bracket is equipped with multiple photoelectric switches on one side to limit the vertical movement distance of the lead screw. The pre-tightening pressing mechanism is equipped with an optical fiber sensor to detect whether the product is properly inserted. The stator assembly mounting plate is equipped with an optical fiber sensor to determine whether the stator components are installed in place. The simple electronic control device completes each step of the process according to the operation buttons and the position of each component of the equipment.

6. The motor stator and rotor assembly equipment according to claim 1, characterized in that, It also includes an adjusting dummy shaft, which is a special debugging part made in 1:1 scale to the size of the motor shaft. The adjusting dummy shaft is used to adjust the pre-tightening pressing mechanism and the lifting mechanism to be concentric.

7. The motor stator and rotor assembly equipment according to claim 1, characterized in that, The cylinder provides power to the lifting rod. The cylinder is controlled by a central leakage solenoid valve, which makes the cylinder retraction action smoother and prevents it from suddenly retracting to the lowest point during the pressing process of the pre-tightening mechanism, thus ensuring the stable installation of the rotor components.

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